A kind of external heat-proof material and preparation method thereof

A heat-proof material and prefabricated technology, applied in the field of materials, can solve the problems of large brittleness and poor deformation coordination ability of external heat-proof materials, and achieve the effect of ensuring thermal insulation effect, improving mechanical properties, and improving deformation coordination ability.

Active Publication Date: 2017-11-14
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the problems of high brittleness and poor deformation coordination ability of traditional external heat-proof materials

Method used

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  • A kind of external heat-proof material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The materials prepared in this embodiment and the preparation method are as follows:

[0062] Through chemical vapor deposition SiC / C interface coating treatment, the preparation of high temperature resistant, high strain coordinated external heat protection material includes the following steps:

[0063] (1), select alumina fiber, prepare alumina needle felt by needle punching process, the density of the prepared alumina needle felt is 0.13g / cm 3 , sintered at 600°C, remove the wetting agent on the fiber surface, and cut the needle felt to a size of 320mm×320mm×22mm.

[0064] (2) Select alumina fiber, and prepare fiber prefabricated body through 2.5D weaving process, the size is 320mm×320mm×2mm and 320mm×320mm×1mm, the fiber volume content is 40%, the burr is cut off, and the acetone treatment is used to remove organic matter.

[0065] (3) Superimpose the preforms of the above three sizes in the order of 2mm / 22mm / 1mm, place them in the sewing tool, and perform integra...

Embodiment 2

[0074] The materials prepared in this embodiment and the preparation method are as follows:

[0075] Preparation of high-temperature resistant, high-strain coordinated external heat-resistant materials by chemical vapor deposition BN interface coating treatment

[0076] (1) Choose alumina fiber, its long-term use temperature is 1300-1400°C, prepare alumina needle-punched felt through needle punching molding process, density 0.16g / cm3, sinter at 600°C, remove fiber surface wetting agent, cut needles The size of the needle felt is 170mm×170mm×22mm.

[0077] (2) Select alumina fiber and prepare fiber preform by 2.5D weaving process. The size is 170mm×170mm×2mm and 170mm×170mm×1mm, the fiber volume content is 40%, the burr is cut off, and the organic matter is removed by acetone treatment.

[0078] (3) The above three kinds of prefabricated bodies are superimposed in the order of 2mm / 22mm / 1mm, placed in the sewing tool for integrated sewing, and the thickness of the green body af...

Embodiment 3

[0087] The materials prepared in this embodiment and the preparation method are as follows:

[0088] Use boric acid and urea impregnation interface coating treatment to prepare high temperature resistant, high strain coordinated external heat protection material

[0089] (1) Select alumina fibers, and prepare alumina needle-punched felt through needle-punching process, with a density of 0.20g / cm 3 , sintered at 600°C, remove the wetting agent on the fiber surface, and cut the needle felt to a size of 120mm×120mm×22mm.

[0090] (2) Select alumina fiber, and prepare fiber prefabricated body through 2.5D weaving process, the size is 120mm×120mm×2mm and 120mm×120mm×1mm, the fiber volume content is 40%, the burr is cut off, and the acetone treatment is used to remove organic matter.

[0091] (3) The above three kinds of prefabricated bodies are superimposed in the order of 2mm / 22mm / 1mm, placed in the sewing tool for integrated sewing, and the thickness of the green body after sewi...

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Abstract

The invention relates to an external thermal insulation material and a preparation method thereof. Specifically, the external thermal insulation material comprises a first faceplate layer, a second faceplate layer and a core aerogel layer, wherein the core aerogel layer is positioned between the first faceplate layer and the second faceplate layer; the first faceplate layer and the second faceplate layer are made of a fiber preform compounded with an aerogel precursor and a ceramic precursor; the core aerogel layer is mainly made of a fiber matrix compounded with an aerogel precursor; fiber surfaces of the fiber preform and the fiber matrix are subjected to interface coating treatment. By adopting the material, the problem of interface coating treatment on a high strain coordination ceramic faceplate can be solved, the temperature resistance grade and the deformation coordination property of a heat-proof and thermal insulating material can be improved, and the material has advantages of high temperature resistance and high strain coordination properties, so that components of relatively large sizes can be designed, and the application range of the material can be widened.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a high-temperature-resistant, high-strain coordinated external heat-resistant material and a preparation method thereof. Background technique [0002] The high-strain coordinated outer heat-proof material is prepared by integrated stitching of the core layer insulation material and the upper and lower ceramic panels. The core layer insulation material is made of flexible cotton felt composited with airgel insulation filler. The continuous fiber reinforced composite ceramic matrix is ​​prepared, and the upper layer / core layer / lower layer are connected by ceramic sutures. The biggest advantages of this type of structure are high deformation coordination performance, strong impact resistance, large size, good heat insulation effect, and simple assembly. It solves the problems of high brittleness and poor deformation coordination ability of traditional external heat-resistant mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/02B32B5/26B32B5/06B32B33/00B32B37/00B32B38/08
CPCB32B5/02B32B5/06B32B5/26B32B33/00B32B37/00B32B38/08B32B2307/304B32B2307/50B32B2605/18
Inventor 苏力军李文静宋寒张凡刘云龙刘斌裴雨辰
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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